Push: Based on the Novel by Sapphire, a raw peek into the life of an abused teenager in 1980s Harlem, was the big winner at the Sundance film festival at the weekend, taking the two top prizes at the annual celebration of independent film-making.

Lee Daniels' film took both the grand jury award and the audience award - only the second time this decade that one movie has grabbed both prizes. Star Mo'Nique also won a special jury award for her performance as an abusive mother. Gabourey Sidibe has been garnering rave reviews for her portrayal of Clareece "Precious" Jones, a struggling teen pregnant with her father's child for the second time, although she did not win any prizes.

The top British film at the festival was the coming-of-age tale An Education, starring Carey Mulligan as a 16-year-old suburban teenager who falls for an older man in 60s London. It took both the world cinema audience award and the world cinematography award in the dramatic category.

Other big winners were Sin Nombre, Cary Joji Fukunaga's drama about Mexicans living in the US, which scored the directing and excellence in cinematography award in the US dramatic categories, and Five Minutes of Heaven, Oliver Hirschbiegel's Troubles drama, which garnered the world cinema directing award and the world cinema screenwriting award in the dramatic section.

Documentaries are always pushed to the fore at Sundance, and this year was no exception, with socially-conscious fare proving especially popular. Havana Marking's Afghan Star, about amateur singers who risk their lives in a Pop Idol style competition in Afghanistan, won the audience award for documentary in the world cinema section and the world cinema directing award for documentary.

Rough Aunties, Kim Longinotto's factual examination of abused children in the slums of South Africa, took the world cinema jury prize for documentary, while the environmentally themed The Cove, about activists fighting to save dolphins from Japanese poachers, stole the audience award for US documentary.

Charles Gant: Armando Iannucci's film converted its critical acclaim into a solid opening at the weekend, one of the films that helped the UK box office to a healthy 47% rise over the same period last year